{"id":60204,"date":"2026-01-15T08:05:29","date_gmt":"2026-01-15T00:05:29","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/60204.html"},"modified":"2026-01-15T08:05:29","modified_gmt":"2026-01-15T00:05:29","slug":"linux6-19-arm64-crypto-aes%e5%9f%ba%e7%a1%80%e5%ae%9e%e7%8e%b0%e5%ad%90%e6%a8%a1%e5%9d%97%e6%b7%b1%e5%85%a5%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/60204.html","title":{"rendered":"Linux6.19-ARM64 crypto AES\u57fa\u7840\u5b9e\u73b0\u5b50\u6a21\u5757\u6df1\u5165\u5206\u6790"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>1. \u6982\u8ff0<\/li>\n<li>2. \u8f6f\u4ef6\u67b6\u6784\u56fe<\/li>\n<li>3. \u8c03\u7528\u6d41\u7a0b\u56fe<\/li>\n<li>4. UML\u7c7b\u56fe<\/li>\n<li>5. \u6e90\u7801\u6df1\u5ea6\u5206\u6790<\/li>\n<li>\n<ul>\n<li>5.1 AES\u7b97\u6cd5\u6838\u5fc3\u5b9e\u73b0\u5206\u6790<\/li>\n<li>\n<ul>\n<li>5.1.1 \u67e5\u8868\u6cd5\u5b9e\u73b0\u673a\u5236<\/li>\n<li>5.1.2 \u8f6e\u51fd\u6570\u5b9e\u73b0<\/li>\n<li>5.1.3 \u52a0\u5bc6\u89e3\u5bc6\u4e3b\u5faa\u73af<\/li>\n<\/ul>\n<\/li>\n<li>5.2 C\u8bed\u8a00\u63a5\u53e3\u5c42\u5206\u6790<\/li>\n<li>\n<ul>\n<li>5.2.1 Glue\u4ee3\u7801\u5b9e\u73b0<\/li>\n<li>5.2.2 \u5355\u5757\u64cd\u4f5c\u63a5\u53e3<\/li>\n<\/ul>\n<\/li>\n<li>5.3 \u6027\u80fd\u4f18\u5316\u5206\u6790<\/li>\n<li>\n<ul>\n<li>5.3.1 \u67e5\u8868\u4f18\u5316<\/li>\n<li>5.3.2 \u6307\u4ee4\u8c03\u5ea6\u4f18\u5316<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>6. \u8bbe\u8ba1\u6a21\u5f0f\u5206\u6790<\/li>\n<li>\n<ul>\n<li>6.1 \u6a21\u677f\u65b9\u6cd5\u6a21\u5f0f\u5728AES\u5b9e\u73b0\u4e2d\u7684\u4f53\u73b0<\/li>\n<li>6.2 \u7b56\u7565\u6a21\u5f0f\u5728\u67e5\u8868\u5b9e\u73b0\u4e2d\u7684\u4f53\u73b0<\/li>\n<li>6.3 \u7ec4\u5408\u6a21\u5f0f\u5728AES\u7ec4\u4ef6\u4e2d\u7684\u4f53\u73b0<\/li>\n<\/ul>\n<\/li>\n<li>7. \u72b6\u6001\u673a\u5206\u6790<\/li>\n<li>8. \u6027\u80fd\u4f18\u5316\u5206\u6790<\/li>\n<li>\n<ul>\n<li>8.1 \u67e5\u8868\u9884\u53d6\u4f18\u5316<\/li>\n<li>8.2 \u5faa\u73af\u5c55\u5f00\u4f18\u5316<\/li>\n<li>8.3 \u5b57\u8282\u5e8f\u5904\u7406\u4f18\u5316<\/li>\n<\/ul>\n<\/li>\n<li>9. \u5b89\u5168\u6027\u8003\u8651<\/li>\n<li>\n<ul>\n<li>9.1 \u4fa7\u4fe1\u9053\u653b\u51fb\u9632\u62a4<\/li>\n<li>9.2 \u5185\u5b58\u5b89\u5168\u9632\u62a4<\/li>\n<li>9.3 \u5bc6\u94a5\u7ba1\u7406\u5b89\u5168<\/li>\n<\/ul>\n<\/li>\n<li>10. \u6269\u5c55\u6027\u5206\u6790<\/li>\n<li>\n<ul>\n<li>10.1 \u65b0\u7b97\u6cd5\u652f\u6301<\/li>\n<li>10.2 \u786c\u4ef6\u52a0\u901f\u6269\u5c55<\/li>\n<li>10.3 \u6d4b\u8bd5\u548c\u9a8c\u8bc1\u6269\u5c55<\/li>\n<\/ul>\n<\/li>\n<li>11. \u8c03\u8bd5\u548c\u7ef4\u62a4<\/li>\n<li>\n<ul>\n<li>11.1 \u8c03\u8bd5\u4fe1\u606f\u8f93\u51fa<\/li>\n<li>11.2 \u9519\u8bef\u68c0\u6d4b\u548c\u6062\u590d<\/li>\n<\/ul>\n<\/li>\n<li>12. \u672a\u6765\u53d1\u5c55\u65b9\u5411<\/li>\n<li>13. \u603b\u7ed3<\/li>\n<\/ul>\n<hr \/>\n<p>\u2003\u2003\u56e2\u961f\u535a\u5ba2: \u6c7d\u8f66\u7535\u5b50\u793e\u533a<\/p>\n<hr \/>\n<h2>1. \u6982\u8ff0<\/h2>\n<p>\u2003\u2003ARM64 crypto AES\u57fa\u7840\u5b9e\u73b0\u5b50\u6a21\u5757\u662fLinux\u5185\u6838ARM64\u67b6\u6784\u52a0\u5bc6\u5b50\u7cfb\u7edf\u4e2dAES\u7b97\u6cd5\u7684\u6838\u5fc3\u5b9e\u73b0&#xff0c;\u5305\u542baes-cipher-core.S\u3001aes-cipher-glue.c\u7b49\u6838\u5fc3\u6587\u4ef6\u3002\u8be5\u6a21\u5757\u63d0\u4f9b\u4e86\u4e0d\u4f9d\u8d56\u7279\u6b8a\u786c\u4ef6\u52a0\u901f\u7684\u7eaf\u8f6f\u4ef6AES\u52a0\u5bc6\u89e3\u5bc6\u529f\u80fd&#xff0c;\u4f5c\u4e3aARM64\u52a0\u5bc6\u5b50\u7cfb\u7edf\u7684\u57fa\u7840\u7ec4\u4ef6\u3002<\/p>\n<p>\u2003\u2003AES\u57fa\u7840\u5b9e\u73b0\u5b50\u6a21\u5757\u91c7\u7528\u4e86\u4f18\u5316\u7684\u67e5\u8868\u6cd5\u548c\u4f4d\u64cd\u4f5c&#xff0c;\u901a\u8fc7\u7cbe\u5fc3\u8bbe\u8ba1\u7684\u5b8f\u548c\u6c47\u7f16\u4ee3\u7801&#xff0c;\u5728\u4fdd\u6301\u4ee3\u7801\u7b80\u6d01\u7684\u540c\u65f6\u5b9e\u73b0\u4e86\u9ad8\u6548\u7684AES\u8fd0\u7b97\u3002\u8be5\u6a21\u5757\u652f\u6301128\u4f4d\u3001192\u4f4d\u548c256\u4f4d\u5bc6\u94a5\u957f\u5ea6&#xff0c;\u63d0\u4f9b\u4e86\u52a0\u5bc6\u548c\u89e3\u5bc6\u4e24\u79cd\u64cd\u4f5c\u6a21\u5f0f&#xff0c;\u662fARM64\u5e73\u53f0AES\u52a0\u5bc6\u529f\u80fd\u7684\u57fa\u7840\u8bbe\u65bd\u3002<\/p>\n<p>\u2003\u2003\u6a21\u5757\u7684\u8bbe\u8ba1\u4f53\u73b0\u4e86\u8f6f\u4ef6\u52a0\u5bc6\u7b97\u6cd5\u5b9e\u73b0\u7684\u7ecf\u5178\u65b9\u6cd5&#xff0c;\u901a\u8fc7\u67e5\u8868\u548c\u4f4d\u8fd0\u7b97\u7684\u7ec4\u5408&#xff0c;\u5728\u901a\u7528\u5904\u7406\u5668\u4e0a\u5b9e\u73b0\u4e86AES\u7684\u9ad8\u6027\u80fd\u8ba1\u7b97&#xff0c;\u662fARM64\u52a0\u5bc6\u5b50\u7cfb\u7edf\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\u3002<\/p>\n<h2>2. 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circle,#mermaid-svg-01P3h89Eq3Yb6cfd .node ellipse,#mermaid-svg-01P3h89Eq3Yb6cfd .node polygon,#mermaid-svg-01P3h89Eq3Yb6cfd .node path{fill:#ECECFF;stroke:#9370DB;stroke-width:1px;}#mermaid-svg-01P3h89Eq3Yb6cfd .rough-node .label text,#mermaid-svg-01P3h89Eq3Yb6cfd .node .label text,#mermaid-svg-01P3h89Eq3Yb6cfd .image-shape .label,#mermaid-svg-01P3h89Eq3Yb6cfd .icon-shape .label{text-anchor:middle;}#mermaid-svg-01P3h89Eq3Yb6cfd .node .katex path{fill:#000;stroke:#000;stroke-width:1px;}#mermaid-svg-01P3h89Eq3Yb6cfd .rough-node .label,#mermaid-svg-01P3h89Eq3Yb6cfd .node .label,#mermaid-svg-01P3h89Eq3Yb6cfd .image-shape .label,#mermaid-svg-01P3h89Eq3Yb6cfd .icon-shape .label{text-align:center;}#mermaid-svg-01P3h89Eq3Yb6cfd .node.clickable{cursor:pointer;}#mermaid-svg-01P3h89Eq3Yb6cfd .root .anchor path{fill:#333333!important;stroke-width:0;stroke:#333333;}#mermaid-svg-01P3h89Eq3Yb6cfd .arrowheadPath{fill:#333333;}#mermaid-svg-01P3h89Eq3Yb6cfd .edgePath 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#aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-01P3h89Eq3Yb6cfd .flowchartTitleText{text-anchor:middle;font-size:18px;fill:#333;}#mermaid-svg-01P3h89Eq3Yb6cfd rect.text{fill:none;stroke-width:0;}#mermaid-svg-01P3h89Eq3Yb6cfd .icon-shape,#mermaid-svg-01P3h89Eq3Yb6cfd .image-shape{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-01P3h89Eq3Yb6cfd .icon-shape p,#mermaid-svg-01P3h89Eq3Yb6cfd .image-shape p{background-color:rgba(232,232,232, 0.8);padding:2px;}#mermaid-svg-01P3h89Eq3Yb6cfd .icon-shape rect,#mermaid-svg-01P3h89Eq3Yb6cfd .image-shape rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-01P3h89Eq3Yb6cfd .label-icon{display:inline-block;height:1em;overflow:visible;vertical-align:-0.125em;}#mermaid-svg-01P3h89Eq3Yb6cfd .node .label-icon path{fill:currentColor;stroke:revert;stroke-width:revert;}#mermaid-svg-01P3h89Eq3Yb6cfd :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;}<\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>ARM64 crypto AES\u57fa\u7840\u5b9e\u73b0<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>AES\u52a0\u5bc6\u6838\u5fc3<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>AES\u89e3\u5bc6\u6838\u5fc3<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u67e5\u8868\u8f6c\u6362<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u4f4d\u64cd\u4f5c\u4f18\u5316<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u5bc6\u94a5\u6269\u5c55<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u52a0\u5bc6\u8f6e\u51fd\u6570<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u5b57\u8282\u4ee3\u6362<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u884c\u79fb\u4f4d<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u5217\u6df7\u6dc6<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u89e3\u5bc6\u8f6e\u51fd\u6570<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u9006\u5b57\u8282\u4ee3\u6362<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u9006\u884c\u79fb\u4f4d<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u9006\u5217\u6df7\u6dc6<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>S\u76d2\u67e5\u8868<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u9006S\u76d2\u67e5\u8868<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u6df7\u6dc6\u77e9\u9635<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u5b57\u8282\u63d0\u53d6<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u5faa\u73af\u79fb\u4f4d<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>XOR\u8fd0\u7b97<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u5bc6\u94a5\u8c03\u5ea6<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u8f6e\u5bc6\u94a5\u751f\u6210<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u5bc6\u94a5\u6269\u5c55\u7b97\u6cd5<\/p>\n<p><\/span><\/p>\n<h2>3. \u8c03\u7528\u6d41\u7a0b\u56fe<\/h2>\n<p>  #mermaid-svg-ymzTTrXXGjqfxJ0a{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;fill:#333;}@keyframes edge-animation-frame{from{stroke-dashoffset:0;}}@keyframes dash{to{stroke-dashoffset:0;}}#mermaid-svg-ymzTTrXXGjqfxJ0a .edge-animation-slow{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 50s linear 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ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-ymzTTrXXGjqfxJ0a p{margin:0;}#mermaid-svg-ymzTTrXXGjqfxJ0a .label{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;color:#333;}#mermaid-svg-ymzTTrXXGjqfxJ0a .cluster-label text{fill:#333;}#mermaid-svg-ymzTTrXXGjqfxJ0a .cluster-label span{color:#333;}#mermaid-svg-ymzTTrXXGjqfxJ0a .cluster-label span p{background-color:transparent;}#mermaid-svg-ymzTTrXXGjqfxJ0a .label text,#mermaid-svg-ymzTTrXXGjqfxJ0a span{fill:#333;color:#333;}#mermaid-svg-ymzTTrXXGjqfxJ0a .node rect,#mermaid-svg-ymzTTrXXGjqfxJ0a .node circle,#mermaid-svg-ymzTTrXXGjqfxJ0a .node ellipse,#mermaid-svg-ymzTTrXXGjqfxJ0a .node polygon,#mermaid-svg-ymzTTrXXGjqfxJ0a .node path{fill:#ECECFF;stroke:#9370DB;stroke-width:1px;}#mermaid-svg-ymzTTrXXGjqfxJ0a .rough-node .label text,#mermaid-svg-ymzTTrXXGjqfxJ0a .node .label text,#mermaid-svg-ymzTTrXXGjqfxJ0a .image-shape .label,#mermaid-svg-ymzTTrXXGjqfxJ0a .icon-shape .label{text-anchor:middle;}#mermaid-svg-ymzTTrXXGjqfxJ0a .node .katex path{fill:#000;stroke:#000;stroke-width:1px;}#mermaid-svg-ymzTTrXXGjqfxJ0a .rough-node .label,#mermaid-svg-ymzTTrXXGjqfxJ0a .node .label,#mermaid-svg-ymzTTrXXGjqfxJ0a .image-shape .label,#mermaid-svg-ymzTTrXXGjqfxJ0a .icon-shape .label{text-align:center;}#mermaid-svg-ymzTTrXXGjqfxJ0a .node.clickable{cursor:pointer;}#mermaid-svg-ymzTTrXXGjqfxJ0a .root .anchor path{fill:#333333!important;stroke-width:0;stroke:#333333;}#mermaid-svg-ymzTTrXXGjqfxJ0a .arrowheadPath{fill:#333333;}#mermaid-svg-ymzTTrXXGjqfxJ0a .edgePath .path{stroke:#333333;stroke-width:2.0px;}#mermaid-svg-ymzTTrXXGjqfxJ0a .flowchart-link{stroke:#333333;fill:none;}#mermaid-svg-ymzTTrXXGjqfxJ0a .edgeLabel{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-ymzTTrXXGjqfxJ0a .edgeLabel p{background-color:rgba(232,232,232, 0.8);}#mermaid-svg-ymzTTrXXGjqfxJ0a .edgeLabel rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-ymzTTrXXGjqfxJ0a .labelBkg{background-color:rgba(232, 232, 232, 0.5);}#mermaid-svg-ymzTTrXXGjqfxJ0a .cluster rect{fill:#ffffde;stroke:#aaaa33;stroke-width:1px;}#mermaid-svg-ymzTTrXXGjqfxJ0a .cluster text{fill:#333;}#mermaid-svg-ymzTTrXXGjqfxJ0a .cluster span{color:#333;}#mermaid-svg-ymzTTrXXGjqfxJ0a div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:12px;background:hsl(80, 100%, 96.2745098039%);border:1px solid #aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-ymzTTrXXGjqfxJ0a .flowchartTitleText{text-anchor:middle;font-size:18px;fill:#333;}#mermaid-svg-ymzTTrXXGjqfxJ0a rect.text{fill:none;stroke-width:0;}#mermaid-svg-ymzTTrXXGjqfxJ0a .icon-shape,#mermaid-svg-ymzTTrXXGjqfxJ0a .image-shape{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-ymzTTrXXGjqfxJ0a .icon-shape p,#mermaid-svg-ymzTTrXXGjqfxJ0a .image-shape p{background-color:rgba(232,232,232, 0.8);padding:2px;}#mermaid-svg-ymzTTrXXGjqfxJ0a .icon-shape rect,#mermaid-svg-ymzTTrXXGjqfxJ0a .image-shape rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-ymzTTrXXGjqfxJ0a .label-icon{display:inline-block;height:1em;overflow:visible;vertical-align:-0.125em;}#mermaid-svg-ymzTTrXXGjqfxJ0a .node .label-icon path{fill:currentColor;stroke:revert;stroke-width:revert;}#mermaid-svg-ymzTTrXXGjqfxJ0a :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;}<\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/p>\n<p>\u52a0\u5bc6<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/p>\n<p>\u89e3\u5bc6<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u5e94\u7528\u8bf7\u6c42AES\u64cd\u4f5c<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u8c03\u7528crypto API<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u9009\u62e9AES\u7b97\u6cd5<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u521d\u59cb\u5316AES\u4e0a\u4e0b\u6587<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u8bbe\u7f6e\u5bc6\u94a5<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u64cd\u4f5c\u7c7b\u578b<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u8c03\u7528__aes_arm64_encrypt<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u8c03\u7528__aes_arm64_decrypt<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u52a0\u8f7d\u660e\u6587\u6570\u636e<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u52a0\u8f7d\u8f6e\u5bc6\u94a5<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u6267\u884cAES\u52a0\u5bc6\u8f6e<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u8f93\u51fa\u5bc6\u6587<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u52a0\u8f7d\u5bc6\u6587\u6570\u636e<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u52a0\u8f7d\u8f6e\u5bc6\u94a5<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u6267\u884cAES\u89e3\u5bc6\u8f6e<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u8f93\u51fa\u660e\u6587<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u8fd4\u56de\u7ed3\u679c<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>AES\u64cd\u4f5c\u5b8c\u6210<\/p>\n<p><\/span><\/p>\n<h2>4. 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.edge-thickness-invisible{stroke-width:0;fill:none;}#mermaid-svg-2kTxBTQjQLtD9suF .edge-pattern-dashed{stroke-dasharray:3;}#mermaid-svg-2kTxBTQjQLtD9suF .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-2kTxBTQjQLtD9suF .marker{fill:#333333;stroke:#333333;}#mermaid-svg-2kTxBTQjQLtD9suF .marker.cross{stroke:#333333;}#mermaid-svg-2kTxBTQjQLtD9suF svg{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-2kTxBTQjQLtD9suF p{margin:0;}#mermaid-svg-2kTxBTQjQLtD9suF g.classGroup text{fill:#9370DB;stroke:none;font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:10px;}#mermaid-svg-2kTxBTQjQLtD9suF g.classGroup text .title{font-weight:bolder;}#mermaid-svg-2kTxBTQjQLtD9suF .nodeLabel,#mermaid-svg-2kTxBTQjQLtD9suF .edgeLabel{color:#131300;}#mermaid-svg-2kTxBTQjQLtD9suF .edgeLabel .label rect{fill:#ECECFF;}#mermaid-svg-2kTxBTQjQLtD9suF .label text{fill:#131300;}#mermaid-svg-2kTxBTQjQLtD9suF 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.dashed-line{stroke-dasharray:3;}#mermaid-svg-2kTxBTQjQLtD9suF .dotted-line{stroke-dasharray:1 2;}#mermaid-svg-2kTxBTQjQLtD9suF #compositionStart,#mermaid-svg-2kTxBTQjQLtD9suF .composition{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-2kTxBTQjQLtD9suF #compositionEnd,#mermaid-svg-2kTxBTQjQLtD9suF .composition{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-2kTxBTQjQLtD9suF #dependencyStart,#mermaid-svg-2kTxBTQjQLtD9suF .dependency{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-2kTxBTQjQLtD9suF #dependencyStart,#mermaid-svg-2kTxBTQjQLtD9suF .dependency{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-2kTxBTQjQLtD9suF #extensionStart,#mermaid-svg-2kTxBTQjQLtD9suF .extension{fill:transparent!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-2kTxBTQjQLtD9suF #extensionEnd,#mermaid-svg-2kTxBTQjQLtD9suF 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.label-icon{display:inline-block;height:1em;overflow:visible;vertical-align:-0.125em;}#mermaid-svg-2kTxBTQjQLtD9suF .node .label-icon path{fill:currentColor;stroke:revert;stroke-width:revert;}#mermaid-svg-2kTxBTQjQLtD9suF :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;}<\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>AesCipherCore<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;__aes_arm64_encrypt()<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;__aes_arm64_decrypt()<\/p>\n<p><\/span><\/p>\n<p>          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markdown-node-label\"><\/p>\n<p>&#043;crypto_aes_decrypt_one()<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>LookupTables<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;crypto_ft_tab[]<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;crypto_it_tab[]<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;crypto_aes_inv_sbox[]<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;crypto_aes_sbox[]<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>KeyExpansion<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;aes_key_expansion()<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;aes_inv_key_expansion()<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;round_key_generation()<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>MacroSystem<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;__pair0()<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;__pair1()<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;__hround()<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;fround()<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;iround()<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>AesContext<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;round_keys[]<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;rounds: int<\/p>\n<p><\/span><\/p>\n<p>          <span class=\"nodeLabel markdown-node-label\"><\/p>\n<p>&#043;key_length: int<\/p>\n<p><\/span><\/p>\n<h2>5. \u6e90\u7801\u6df1\u5ea6\u5206\u6790<\/h2>\n<h3>5.1 AES\u7b97\u6cd5\u6838\u5fc3\u5b9e\u73b0\u5206\u6790<\/h3>\n<h4>5.1.1 \u67e5\u8868\u6cd5\u5b9e\u73b0\u673a\u5236<\/h4>\n<p>\u2003\u2003AES\u57fa\u7840\u5b9e\u73b0\u7684\u67e5\u8868\u6cd5\u901a\u8fc7\u9884\u8ba1\u7b97\u7684S\u76d2\u548c\u9006S\u76d2\u5b9e\u73b0\u5b57\u8282\u4ee3\u6362&#xff1a;<\/p>\n<p>\/*<br \/>\n * Scalar AES core transform using lookup tables<br \/>\n * Implements AES encryption\/decryption using table lookups<br \/>\n * for S-box substitutions and mix columns operations<br \/>\n *\/<\/p>\n<p>.macro__pair1, sz, op, reg0, reg1, in0, in1e, in1d, shift<br \/>\n.ifc\\\\op\\\\shift, b0<br \/>\nubfiz\\\\reg0, \\\\in0, #2, #8    \/\/ Extract byte and multiply by 4<br \/>\nubfiz\\\\reg1, \\\\in1e, #2, #8   \/\/ for table lookup offset<br \/>\n.else<br \/>\nubfx\\\\reg0, \\\\in0, #\\\\shift, #8  \/\/ Extract specific byte<br \/>\nubfx\\\\reg1, \\\\in1e, #\\\\shift, #8 \/\/ from input register<br \/>\n.endif<\/p>\n<p>\/*<br \/>\n * AArch64 cannot do byte size indexed loads from a table containing<br \/>\n * 32-bit quantities, so perform the shift explicitly<br \/>\n *\/<br \/>\n.ifnc\\\\op, b<br \/>\nldr\\\\reg0, [tt, \\\\reg0, uxtw #2]  \/\/ 32-bit table lookup<br \/>\nldr\\\\reg1, [tt, \\\\reg1, uxtw #2]<br \/>\n.else<br \/>\n.if\\\\shift &gt; 0<br \/>\nlsl\\\\reg0, \\\\reg0, #2    \/\/ Adjust offset for byte table<br \/>\nlsl\\\\reg1, \\\\reg1, #2<br \/>\n.endif<br \/>\nldrb\\\\reg0, [tt, \\\\reg0, uxtw]  \/\/ 8-bit table lookup<br \/>\nldrb\\\\reg1, [tt, \\\\reg1, uxtw]<br \/>\n.endif<br \/>\n.endm<\/p>\n<p>\u2003\u2003\u67e5\u8868\u6cd5\u7279\u70b9&#xff1a;<\/p>\n<p>\u2003\u2003\u2003\u20031. \u9884\u8ba1\u7b97\u4f18\u5316&#xff1a;S\u76d2\u53d8\u6362\u9884\u5148\u8ba1\u7b97\u5b58\u50a8\u5728\u8868\u4e2d \u2003\u2003\u2003\u20032. \u5b57\u8282\u7ea7\u64cd\u4f5c&#xff1a;\u5bf9\u6bcf\u4e2a\u5b57\u8282\u72ec\u7acb\u8fdb\u884c\u67e5\u8868\u53d8\u6362 \u2003\u2003\u2003\u20033. \u5e76\u884c\u5904\u7406&#xff1a;\u591a\u4e2a\u5b57\u8282\u53ef\u540c\u65f6\u8fdb\u884c\u67e5\u8868 \u2003\u2003\u2003\u20034. \u7f13\u5b58\u53cb\u597d&#xff1a;\u67e5\u8868\u8bbf\u95ee\u5177\u6709\u826f\u597d\u7684\u7a7a\u95f4\u5c40\u90e8\u6027 \u2003\u2003\u2003\u20035. \u8ba1\u7b97\u66ff\u6362&#xff1a;\u7528\u5b58\u50a8\u7a7a\u95f4\u6362\u53d6\u8ba1\u7b97\u65f6\u95f4<\/p>\n<h4>5.1.2 \u8f6e\u51fd\u6570\u5b9e\u73b0<\/h4>\n<p>\u2003\u2003AES\u52a0\u5bc6\u8f6e\u51fd\u6570\u7684\u5b9e\u73b0&#xff1a;<\/p>\n<p>.macrofround, out0, out1, out2, out3, in0, in1, in2, in3, sz&#061;2, op<br \/>\n__hround\\\\out0, \\\\out1, \\\\in0, \\\\in1, \\\\in2, \\\\in3, \\\\out2, \\\\out3, 1, \\\\sz, \\\\op<br \/>\n__hround\\\\out2, \\\\out3, \\\\in2, \\\\in3, \\\\in0, \\\\in1, \\\\in1, \\\\in2, 1, \\\\sz, \\\\op<br \/>\n.endm<\/p>\n<p>.macro__hround, out0, out1, in0, in1, in2, in3, t0, t1, enc, sz, op<br \/>\nldp\\\\out0, \\\\out1, [rk], #8    \/\/ Load round key<\/p>\n<p>__pair\\\\enc\\\\sz, \\\\op, w12, w13, \\\\in0, \\\\in1, \\\\in3, 0   \/\/ Byte 0,1<br \/>\n__pair\\\\enc\\\\sz, \\\\op, w14, w15, \\\\in1, \\\\in2, \\\\in0, 8   \/\/ Byte 1,2<br \/>\n__pair\\\\enc\\\\sz, \\\\op, w16, w17, \\\\in2, \\\\in3, \\\\in1, 16  \/\/ Byte 2,3<br \/>\n__pair\\\\enc\\\\sz, \\\\op, \\\\t0, \\\\t1, \\\\in3, \\\\in0, \\\\in2, 24  \/\/ Byte 3,0<\/p>\n<p>eor\\\\out0, \\\\out0, w12        \/\/ XOR with round key<br \/>\neor\\\\out1, \\\\out1, w13<br \/>\neor\\\\out0, \\\\out0, w14, ror #24  \/\/ Rotate and XOR<br \/>\neor\\\\out1, \\\\out1, w15, ror #24<br \/>\neor\\\\out0, \\\\out0, w16, ror #16<br \/>\neor\\\\out1, \\\\out1, w17, ror #16<br \/>\neor\\\\out0, \\\\out0, \\\\t0, ror #8<br \/>\neor\\\\out1, \\\\out1, \\\\t1, ror #8<br \/>\n.endm<\/p>\n<p>\u2003\u2003\u8f6e\u51fd\u6570\u7279\u70b9&#xff1a;<\/p>\n<p>\u2003\u2003\u2003\u20031. \u56db\u5b57\u8282\u5e76\u884c&#xff1a;\u540c\u65f6\u5904\u7406\u56db\u4e2a32\u4f4d\u5b57 \u2003\u2003\u2003\u20032. \u67e5\u8868&#043;\u79fb\u4f4d&#043;XOR&#xff1a;AES\u8f6e\u51fd\u6570\u7684\u6838\u5fc3\u64cd\u4f5c \u2003\u2003\u2003\u20033. \u6d41\u6c34\u7ebf\u53cb\u597d&#xff1a;\u6307\u4ee4\u5e8f\u5217\u9002\u5408\u5904\u7406\u5668\u6d41\u6c34\u7ebf \u2003\u2003\u2003\u20034. \u5bc4\u5b58\u5668\u4f18\u5316&#xff1a;\u6700\u5c0f\u5316\u5185\u5b58\u8bbf\u95ee&#xff0c;\u6700\u5927\u5316\u5bc4\u5b58\u5668\u4f7f\u7528 \u2003\u2003\u2003\u20035. \u5faa\u73af\u5c55\u5f00&#xff1a;\u7f16\u8bd1\u65f6\u5c55\u5f00\u5faa\u73af\u4ee5\u63d0\u9ad8\u6027\u80fd<\/p>\n<h4>5.1.3 \u52a0\u5bc6\u89e3\u5bc6\u4e3b\u5faa\u73af<\/h4>\n<p>\u2003\u2003AES\u52a0\u5bc6\u89e3\u5bc6\u7684\u4e3b\u5faa\u73af\u5b9e\u73b0&#xff1a;<\/p>\n<p>.macrodo_crypt, round, ttab, ltab, bsz<br \/>\nldpw4, w5, [in]        \/\/ Load input data<br \/>\nldpw6, w7, [in, #8]<br \/>\nldpw8, w9, [rk], #16   \/\/ Load first round key<br \/>\nldpw10, w11, [rk, #-8]<\/p>\n<p>CPU_BE(revw4, w4)   \/\/ Handle big-endian if needed<br \/>\nCPU_BE(revw5, w5)<br \/>\nCPU_BE(revw6, w6)<br \/>\nCPU_BE(revw7, w7)<\/p>\n<p>eorw4, w4, w8          \/\/ Initial AddRoundKey<br \/>\neorw5, w5, w9<br \/>\neorw6, w6, w10<br \/>\neorw7, w7, w11<\/p>\n<p>adr_ltt, \\\\ttab           \/\/ Set table pointer<\/p>\n<p>tbnzrounds, #1, 1f      \/\/ Check if odd number of rounds<\/p>\n<p>0:\\\\roundw8, w9, w10, w11, w4, w5, w6, w7  \/\/ Main rounds<br \/>\n\\\\roundw4, w5, w6, w7, w8, w9, w10, w11<\/p>\n<p>1:subsrounds, rounds, #4  \/\/ Decrement round counter<br \/>\n\\\\roundw8, w9, w10, w11, w4, w5, w6, w7  \/\/ Continue rounds<br \/>\nb.ls3f                  \/\/ Exit if done<br \/>\n2:\\\\roundw4, w5, w6, w7, w8, w9, w10, w11  \/\/ More rounds<br \/>\nb0b                  \/\/ Loop back<\/p>\n<p>3:adr_ltt, \\\\ltab           \/\/ Last round table<br \/>\n\\\\roundw4, w5, w6, w7, w8, w9, w10, w11, \\\\bsz, b  \/\/ Final round<\/p>\n<p>CPU_BE(revw4, w4)   \/\/ Handle big-endian output<br \/>\nCPU_BE(revw5, w5)<br \/>\nCPU_BE(revw6, w6)<br \/>\nCPU_BE(revw7, w7)<\/p>\n<p>stpw4, w5, [out]       \/\/ Store output<br \/>\nstpw6, w7, [out, #8]<br \/>\nret<br \/>\n.endm<\/p>\n<p>\u2003\u2003\u4e3b\u5faa\u73af\u7279\u70b9&#xff1a;<\/p>\n<p>\u2003\u2003\u2003\u20031. \u5faa\u73af\u5c55\u5f00&#xff1a;\u624b\u52a8\u5c55\u5f00\u5faa\u73af\u4ee5\u51cf\u5c11\u5206\u652f\u5f00\u9500 \u2003\u2003\u2003\u20032. \u6761\u4ef6\u5206\u652f&#xff1a;\u6839\u636e\u8f6e\u6570\u9009\u62e9\u4e0d\u540c\u7684\u6267\u884c\u8def\u5f84 \u2003\u2003\u2003\u20033. \u5927\u7aef\u5904\u7406&#xff1a;\u652f\u6301\u5927\u7aef\u548c\u5c0f\u7aef\u5b57\u8282\u5e8f \u2003\u2003\u2003\u20034. \u8868\u5207\u6362&#xff1a;\u5728\u6700\u540e\u4e00\u8f6e\u5207\u6362\u5230\u4e0d\u540c\u7684\u67e5\u8868 \u2003\u2003\u2003\u20035. \u539f\u5b50\u5b8c\u6210&#xff1a;\u5355\u6b21\u8c03\u7528\u5b8c\u6210\u6574\u4e2a\u5757\u7684\u52a0\u5bc6\/\u89e3\u5bc6<\/p>\n<h3>5.2 C\u8bed\u8a00\u63a5\u53e3\u5c42\u5206\u6790<\/h3>\n<h4>5.2.1 Glue\u4ee3\u7801\u5b9e\u73b0<\/h4>\n<p>\u2003\u2003AES cipher glue\u4ee3\u7801\u5b9e\u73b0&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ AES cipher glue functions<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">aes_cipher_encrypt<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">crypto_tfm<\/span> <span class=\"token operator\">*<\/span>tfm<span class=\"token punctuation\">,<\/span> u8 <span class=\"token operator\">*<\/span>out<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> u8 <span class=\"token operator\">*<\/span>in<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">aes_ctx<\/span> <span class=\"token operator\">*<\/span>ctx <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">crypto_tfm_ctx<\/span><span class=\"token punctuation\">(<\/span>tfm<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">__aes_arm64_encrypt<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">-&gt;<\/span>key_enc<span class=\"token punctuation\">,<\/span> out<span class=\"token punctuation\">,<\/span> in<span class=\"token punctuation\">,<\/span> ctx<span class=\"token operator\">-&gt;<\/span>key_length<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">aes_cipher_decrypt<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">crypto_tfm<\/span> <span class=\"token operator\">*<\/span>tfm<span class=\"token punctuation\">,<\/span> u8 <span class=\"token operator\">*<\/span>out<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> u8 <span class=\"token operator\">*<\/span>in<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">aes_ctx<\/span> <span class=\"token operator\">*<\/span>ctx <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">crypto_tfm_ctx<\/span><span class=\"token punctuation\">(<\/span>tfm<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">__aes_arm64_decrypt<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">-&gt;<\/span>key_dec<span class=\"token punctuation\">,<\/span> out<span class=\"token punctuation\">,<\/span> in<span class=\"token punctuation\">,<\/span> ctx<span class=\"token operator\">-&gt;<\/span>key_length<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">aes_cipher_setkey<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">crypto_tfm<\/span> <span class=\"token operator\">*<\/span>tfm<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> u8 <span class=\"token operator\">*<\/span>in_key<span class=\"token punctuation\">,<\/span><br \/>\n                             <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">int<\/span> key_len<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">aes_ctx<\/span> <span class=\"token operator\">*<\/span>ctx <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">crypto_tfm_ctx<\/span><span class=\"token punctuation\">(<\/span>tfm<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">switch<\/span> <span class=\"token punctuation\">(<\/span>key_len<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">case<\/span> AES_KEYSIZE_128<span class=\"token operator\">:<\/span><br \/>\n        ctx<span class=\"token operator\">-&gt;<\/span>key_length <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ 10 rounds for 128-bit<\/span><br \/>\n        <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">case<\/span> AES_KEYSIZE_192<span class=\"token operator\">:<\/span><br \/>\n        ctx<span class=\"token operator\">-&gt;<\/span>key_length <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">12<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ 12 rounds for 192-bit<\/span><br \/>\n        <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">case<\/span> AES_KEYSIZE_256<span class=\"token operator\">:<\/span><br \/>\n        ctx<span class=\"token operator\">-&gt;<\/span>key_length <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">14<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ 14 rounds for 256-bit<\/span><br \/>\n        <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">default<\/span><span class=\"token operator\">:<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span>EINVAL<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ Expand encryption key<\/span><br \/>\n    <span class=\"token function\">aes_expandkey<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">-&gt;<\/span>key_enc<span class=\"token punctuation\">,<\/span> in_key<span class=\"token punctuation\">,<\/span> key_len<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ Expand decryption key<\/span><br \/>\n    <span class=\"token function\">aes_invert_key<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">-&gt;<\/span>key_dec<span class=\"token punctuation\">,<\/span> ctx<span class=\"token operator\">-&gt;<\/span>key_enc<span class=\"token punctuation\">,<\/span> key_len<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u2003\u2003Glue\u4ee3\u7801\u7279\u70b9&#xff1a;<\/p>\n<p>\u2003\u2003\u2003\u20031. \u63a5\u53e3\u9002\u914d&#xff1a;\u5c06crypto API\u9002\u914d\u5230\u6c47\u7f16\u5b9e\u73b0 \u2003\u2003\u2003\u20032. \u4e0a\u4e0b\u6587\u7ba1\u7406&#xff1a;\u7ba1\u7406AES\u7b97\u6cd5\u4e0a\u4e0b\u6587\u548c\u5bc6\u94a5 \u2003\u2003\u2003\u20033. \u53c2\u6570\u9a8c\u8bc1&#xff1a;\u9a8c\u8bc1\u5bc6\u94a5\u957f\u5ea6\u548c\u8f93\u5165\u53c2\u6570 \u2003\u2003\u2003\u20034. \u5bc6\u94a5\u6269\u5c55&#xff1a;\u8c03\u7528\u5bc6\u94a5\u6269\u5c55\u51fd\u6570\u751f\u6210\u8f6e\u5bc6\u94a5 \u2003\u2003\u2003\u20035. \u9519\u8bef\u5904\u7406&#xff1a;\u8fd4\u56de\u9002\u5f53\u7684\u9519\u8bef\u7801<\/p>\n<h4>5.2.2 \u5355\u5757\u64cd\u4f5c\u63a5\u53e3<\/h4>\n<p>\u2003\u2003AES\u5355\u5757\u52a0\u5bc6\u89e3\u5bc6\u63a5\u53e3&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ Single block encryption\/decryption functions<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">crypto_aes_encrypt_one<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">crypto_aes_ctx<\/span> <span class=\"token operator\">*<\/span>ctx<span class=\"token punctuation\">,<\/span> u8 <span class=\"token operator\">*<\/span>out<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> u8 <span class=\"token operator\">*<\/span>in<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">__aes_arm64_encrypt<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">-&gt;<\/span>key_enc<span class=\"token punctuation\">,<\/span> out<span class=\"token punctuation\">,<\/span> in<span class=\"token punctuation\">,<\/span> ctx<span class=\"token operator\">-&gt;<\/span>key_length<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">crypto_aes_decrypt_one<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">crypto_aes_ctx<\/span> <span class=\"token operator\">*<\/span>ctx<span class=\"token punctuation\">,<\/span> u8 <span class=\"token operator\">*<\/span>out<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> u8 <span class=\"token operator\">*<\/span>in<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">__aes_arm64_decrypt<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">-&gt;<\/span>key_dec<span class=\"token punctuation\">,<\/span> out<span class=\"token punctuation\">,<\/span> in<span class=\"token punctuation\">,<\/span> ctx<span class=\"token operator\">-&gt;<\/span>key_length<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Context structure<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">crypto_aes_ctx<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    u32 key_enc<span class=\"token punctuation\">[<\/span>AES_MAX_KEYLENGTH_U32<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ Encryption round keys<\/span><br \/>\n    u32 key_dec<span class=\"token punctuation\">[<\/span>AES_MAX_KEYLENGTH_U32<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ Decryption round keys<\/span><br \/>\n    u32 key_length<span class=\"token punctuation\">;<\/span>                      <span class=\"token comment\">\/\/ Number of rounds (10\/12\/14)<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u2003\u2003\u5355\u5757\u64cd\u4f5c\u7279\u70b9&#xff1a;<\/p>\n<p>\u2003\u2003\u2003\u20031. \u76f4\u63a5\u8c03\u7528&#xff1a;\u76f4\u63a5\u8c03\u7528\u6c47\u7f16\u51fd\u6570&#xff0c;\u65e0\u989d\u5916\u5f00\u9500 \u2003\u2003\u2003\u20032. \u4e0a\u4e0b\u6587\u4f20\u9012&#xff1a;\u901a\u8fc7\u6307\u9488\u4f20\u9012\u7b97\u6cd5\u4e0a\u4e0b\u6587 \u2003\u2003\u2003\u20033. \u5185\u5b58\u5e03\u5c40&#xff1a;\u4f18\u5316\u7684\u5bc6\u94a5\u5b58\u50a8\u5e03\u5c40 \u2003\u2003\u2003\u20034. \u7c7b\u578b\u5b89\u5168&#xff1a;\u660e\u786e\u7684\u8f93\u5165\u8f93\u51fa\u53c2\u6570\u7c7b\u578b \u2003\u2003\u2003\u20035. \u5185\u8054\u53cb\u597d&#xff1a;\u9002\u5408\u5185\u8054\u5230\u66f4\u9ad8\u7ea7\u7684\u52a0\u5bc6\u51fd\u6570<\/p>\n<h3>5.3 \u6027\u80fd\u4f18\u5316\u5206\u6790<\/h3>\n<h4>5.3.1 \u67e5\u8868\u4f18\u5316<\/h4>\n<p>\u2003\u2003\u67e5\u8868\u6cd5\u7684\u6027\u80fd\u4f18\u5316&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ Lookup table definitions<\/span><br \/>\n<span class=\"token keyword\">extern<\/span> <span class=\"token keyword\">const<\/span> u32 crypto_ft_tab<span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">256<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>     <span class=\"token comment\">\/\/ Forward table for encryption<\/span><br \/>\n<span class=\"token keyword\">extern<\/span> <span class=\"token keyword\">const<\/span> u32 crypto_it_tab<span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">256<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>     <span class=\"token comment\">\/\/ Inverse table for decryption<\/span><br \/>\n<span class=\"token keyword\">extern<\/span> <span class=\"token keyword\">const<\/span> u8 crypto_aes_sbox<span class=\"token punctuation\">[<\/span><span class=\"token number\">256<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>       <span class=\"token comment\">\/\/ S-box for SubBytes<\/span><br \/>\n<span class=\"token keyword\">extern<\/span> <span class=\"token keyword\">const<\/span> u8 crypto_aes_inv_sbox<span class=\"token punctuation\">[<\/span><span class=\"token number\">256<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/\/ Inverse S-box<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Table access optimization<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">SBOX_ACCESS<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>table<span class=\"token punctuation\">,<\/span> index<span class=\"token punctuation\">)<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token keyword\">typeof<\/span><span class=\"token punctuation\">(<\/span>table<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> _result<span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token keyword\">asm<\/span> <span class=\"token keyword\">volatile<\/span> <span class=\"token punctuation\">(<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n            <span class=\"token string\">&#034;ldrb %w0, [%1, %w2]&#034;<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n            <span class=\"token expression\"><span class=\"token operator\">:<\/span> <\/span><span class=\"token string\">&#034;&#061;r&#034;<\/span> <span class=\"token expression\"><span class=\"token punctuation\">(<\/span>_result<span class=\"token punctuation\">)<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n            <span class=\"token expression\"><span class=\"token operator\">:<\/span> <\/span><span class=\"token string\">&#034;r&#034;<\/span> <span class=\"token expression\"><span class=\"token punctuation\">(<\/span>table<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <\/span><span class=\"token string\">&#034;r&#034;<\/span> <span class=\"token expression\"><span class=\"token punctuation\">(<\/span>index<span class=\"token punctuation\">)<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n            <span class=\"token expression\"><span class=\"token operator\">:<\/span> <\/span><span class=\"token string\">&#034;memory&#034;<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\">_result<span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><\/span><\/span><\/p>\n<p>\u2003\u2003\u67e5\u8868\u4f18\u5316\u7279\u70b9&#xff1a;<\/p>\n<p>\u2003\u2003\u2003\u20031. \u7f13\u5b58\u9884\u53d6&#xff1a;\u67e5\u8868\u8bbf\u95ee\u7684\u9884\u6d4b\u6267\u884c \u2003\u2003\u2003\u20032. \u5185\u5b58\u5bf9\u9f50&#xff1a;\u8868\u7684\u5185\u5b58\u5bf9\u9f50\u4f18\u5316 \u2003\u2003\u2003\u20033. \u9884\u53d6\u7b56\u7565&#xff1a;\u8f6f\u4ef6\u9884\u53d6\u4ee5\u6539\u5584\u7f13\u5b58\u6027\u80fd \u2003\u2003\u2003\u20034. \u8868\u5927\u5c0f\u4f18\u5316&#xff1a;\u5e73\u8861\u7a7a\u95f4\u548c\u67e5\u627e\u901f\u5ea6 \u2003\u2003\u2003\u20035. \u5206\u652f\u9884\u6d4b&#xff1a;\u907f\u514d\u6761\u4ef6\u5206\u652f\u7684\u6027\u80fd\u635f\u5931<\/p>\n<h4>5.3.2 \u6307\u4ee4\u8c03\u5ea6\u4f18\u5316<\/h4>\n<p>\u2003\u2003ARM64\u6307\u4ee4\u8c03\u5ea6\u7684\u4f18\u5316&#xff1a;<\/p>\n<p>\/\/ Optimized instruction scheduling for AES rounds<br \/>\n.macro optimized_aes_round<br \/>\n    \/\/ Load round key first (long latency)<br \/>\n    ldp w8, w9, [rk], #8<\/p>\n<p>    \/\/ Perform table lookups in parallel<br \/>\n    __pair1 2, , w12, w13, w4, w5, w7, 0<br \/>\n    __pair1 2, , w14, w15, w5, w6, w4, 8<\/p>\n<p>    \/\/ More lookups while previous complete<br \/>\n    __pair1 2, , w16, w17, w6, w7, w5, 16<br \/>\n    __pair1 2, , w18, w19, w7, w4, w6, 24<\/p>\n<p>    \/\/ XOR operations (short latency, can overlap)<br \/>\n    eor w8, w8, w12<br \/>\n    eor w9, w9, w13<br \/>\n    eor w8, w8, w14, ror #24<br \/>\n    eor w9, w9, w15, ror #24<br \/>\n    eor w8, w8, w16, ror #16<br \/>\n    eor w9, w9, w17, ror #16<br \/>\n    eor w8, w8, w18, ror #8<br \/>\n    eor w9, w9, w19, ror #8<br \/>\n.endm<\/p>\n<p>\u2003\u2003\u6307\u4ee4\u8c03\u5ea6\u7279\u70b9&#xff1a;<\/p>\n<p>\u2003\u2003\u2003\u20031. \u5ef6\u8fdf\u9690\u85cf&#xff1a;\u5c06\u957f\u5ef6\u8fdf\u64cd\u4f5c\u4e0e\u77ed\u5ef6\u8fdf\u64cd\u4f5c\u4ea4\u7ec7 \u2003\u2003\u2003\u20032. \u5e76\u884c\u6267\u884c&#xff1a;\u5229\u7528\u8d85\u6807\u91cf\u5904\u7406\u5668\u5e76\u884c\u6267\u884c\u80fd\u529b \u2003\u2003\u2003\u20033. \u6d41\u6c34\u7ebf\u4f18\u5316&#xff1a;\u4fdd\u6301\u5904\u7406\u5668\u6d41\u6c34\u7ebf\u7684\u9971\u548c \u2003\u2003\u2003\u20034. \u4f9d\u8d56\u6700\u5c0f\u5316&#xff1a;\u51cf\u5c11\u6307\u4ee4\u95f4\u7684\u6570\u636e\u4f9d\u8d56 \u2003\u2003\u2003\u20035. \u8d44\u6e90\u5e73\u8861&#xff1a;\u5e73\u8861\u5404\u4e2a\u6267\u884c\u5355\u5143\u7684\u8d1f\u8f7d<\/p>\n<h2>6. \u8bbe\u8ba1\u6a21\u5f0f\u5206\u6790<\/h2>\n<h3>6.1 \u6a21\u677f\u65b9\u6cd5\u6a21\u5f0f\u5728AES\u5b9e\u73b0\u4e2d\u7684\u4f53\u73b0<\/h3>\n<p>\u2003\u2003AES\u7b97\u6cd5\u7684\u6a21\u677f\u5316\u5b9e\u73b0&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ AES algorithm template<\/span><br \/>\nabstract class AesAlgorithm <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ Template method defining AES encryption flow<\/span><br \/>\n    final <span class=\"token keyword\">void<\/span> <span class=\"token function\">encryptBlock<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> input<span class=\"token punctuation\">,<\/span> byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> output<span class=\"token punctuation\">,<\/span> RoundKey<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> keys<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">initializeState<\/span><span class=\"token punctuation\">(<\/span>input<span class=\"token punctuation\">,<\/span> keys<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> round <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> round <span class=\"token operator\">&lt;<\/span> rounds <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> round<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">performRound<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">,<\/span> keys<span class=\"token punctuation\">[<\/span>round<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token function\">performFinalRound<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">,<\/span> keys<span class=\"token punctuation\">[<\/span>rounds <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">copyToOutput<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">,<\/span> output<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ Abstract methods to be implemented by specific variants<\/span><br \/>\n    abstract <span class=\"token keyword\">void<\/span> <span class=\"token function\">initializeState<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> input<span class=\"token punctuation\">,<\/span> RoundKey initialKey<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    abstract <span class=\"token keyword\">void<\/span> <span class=\"token function\">performRound<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> state<span class=\"token punctuation\">,<\/span> RoundKey key<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    abstract <span class=\"token keyword\">void<\/span> <span class=\"token function\">performFinalRound<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> state<span class=\"token punctuation\">,<\/span> RoundKey key<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    abstract <span class=\"token keyword\">void<\/span> <span class=\"token function\">copyToOutput<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> state<span class=\"token punctuation\">,<\/span> byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> output<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    protected <span class=\"token keyword\">int<\/span> rounds<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ Number of rounds<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Scalar AES implementation<\/span><br \/>\nclass ScalarAes extends AesAlgorithm <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token keyword\">void<\/span> <span class=\"token function\">initializeState<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> input<span class=\"token punctuation\">,<\/span> RoundKey initialKey<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ AddRoundKey operation<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">16<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            state<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> input<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">^<\/span> initialKey<span class=\"token punctuation\">.<\/span><span class=\"token function\">getByte<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">void<\/span> <span class=\"token function\">performRound<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> state<span class=\"token punctuation\">,<\/span> RoundKey key<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ SubBytes &#043; ShiftRows &#043; MixColumns &#043; AddRoundKey<\/span><br \/>\n        <span class=\"token function\">substituteBytes<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">shiftRows<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">mixColumns<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">addRoundKey<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">,<\/span> key<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">void<\/span> <span class=\"token function\">performFinalRound<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> state<span class=\"token punctuation\">,<\/span> RoundKey key<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ SubBytes &#043; ShiftRows &#043; AddRoundKey (no MixColumns)<\/span><br \/>\n        <span class=\"token function\">substituteBytes<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">shiftRows<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">addRoundKey<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">,<\/span> key<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">void<\/span> <span class=\"token function\">copyToOutput<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> state<span class=\"token punctuation\">,<\/span> byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> output<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        System<span class=\"token punctuation\">.<\/span><span class=\"token function\">arraycopy<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> output<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">16<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>6.2 \u7b56\u7565\u6a21\u5f0f\u5728\u67e5\u8868\u5b9e\u73b0\u4e2d\u7684\u4f53\u73b0<\/h3>\n<p>\u2003\u2003\u4e0d\u540c\u7684\u67e5\u8868\u7b56\u7565&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ Table lookup strategy interface<\/span><br \/>\ninterface LookupStrategy <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> <span class=\"token function\">lookupSBox<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> input<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> <span class=\"token function\">lookupInverseSBox<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> input<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> <span class=\"token function\">lookupMixColumns<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> input<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    boolean <span class=\"token function\">supportsParallelLookup<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Standard table lookup strategy<\/span><br \/>\nclass StandardLookupStrategy implements LookupStrategy <span class=\"token punctuation\">{<\/span><\/p>\n<p>    private <span class=\"token keyword\">static<\/span> final <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> SBOX <span class=\"token operator\">&#061;<\/span> crypto_aes_sbox<span class=\"token punctuation\">;<\/span><br \/>\n    private <span class=\"token keyword\">static<\/span> final <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> INVERSE_SBOX <span class=\"token operator\">&#061;<\/span> crypto_aes_inv_sbox<span class=\"token punctuation\">;<\/span><br \/>\n    private <span class=\"token keyword\">static<\/span> final <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> MIX_COLUMNS_TABLE <span class=\"token operator\">&#061;<\/span> crypto_ft_tab<span class=\"token punctuation\">;<\/span><\/p>\n<p>    public <span class=\"token keyword\">int<\/span> <span class=\"token function\">lookupSBox<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> input<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> SBOX<span class=\"token punctuation\">[<\/span>input <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0xFF<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public <span class=\"token keyword\">int<\/span> <span class=\"token function\">lookupInverseSBox<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> input<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> INVERSE_SBOX<span class=\"token punctuation\">[<\/span>input <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0xFF<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public <span class=\"token keyword\">int<\/span> <span class=\"token function\">lookupMixColumns<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> input<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> index <span class=\"token operator\">&#061;<\/span> input <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0xFF<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> MIX_COLUMNS_TABLE<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span>index<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ Use first table<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public boolean <span class=\"token function\">supportsParallelLookup<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> false<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ Standard lookup is sequential<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Optimized table lookup strategy<\/span><br \/>\nclass OptimizedLookupStrategy implements LookupStrategy <span class=\"token punctuation\">{<\/span><\/p>\n<p>    public <span class=\"token keyword\">int<\/span> <span class=\"token function\">lookupSBox<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> input<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ Use bit manipulation for faster lookup<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> index <span class=\"token operator\">&#061;<\/span> input <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0xFF<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> precomputedSBox<span class=\"token punctuation\">[<\/span>index<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public <span class=\"token keyword\">int<\/span> <span class=\"token function\">lookupInverseSBox<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> input<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> index <span class=\"token operator\">&#061;<\/span> input <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0xFF<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> precomputedInvSBox<span class=\"token punctuation\">[<\/span>index<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public <span class=\"token keyword\">int<\/span> <span class=\"token function\">lookupMixColumns<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> input<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ Use SIMD-friendly table layout<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> index <span class=\"token operator\">&#061;<\/span> input <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0xFF<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> optimizedMixColumnsTable<span class=\"token punctuation\">[<\/span>index<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public boolean <span class=\"token function\">supportsParallelLookup<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> true<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ Optimized version supports parallel lookup<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Context using lookup strategy<\/span><br \/>\nclass AesTableLookupContext <span class=\"token punctuation\">{<\/span><br \/>\n    private LookupStrategy strategy<span class=\"token punctuation\">;<\/span><\/p>\n<p>    public <span class=\"token function\">AesTableLookupContext<\/span><span class=\"token punctuation\">(<\/span>LookupStrategy strategy<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        this<span class=\"token punctuation\">.<\/span>strategy <span class=\"token operator\">&#061;<\/span> strategy<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public <span class=\"token keyword\">void<\/span> <span class=\"token function\">performSubBytes<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> state<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">16<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            state<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">)<\/span> strategy<span class=\"token punctuation\">.<\/span><span class=\"token function\">lookupSBox<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>6.3 \u7ec4\u5408\u6a21\u5f0f\u5728AES\u7ec4\u4ef6\u4e2d\u7684\u4f53\u73b0<\/h3>\n<p>\u2003\u2003AES\u7ec4\u4ef6\u7684\u5c42\u6b21\u5316\u7ec4\u5408&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ AES component interface<\/span><br \/>\ninterface AesComponent <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">process<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> <span class=\"token function\">getLatency<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    boolean <span class=\"token function\">isHardwareAccelerated<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Leaf components<\/span><br \/>\nclass SubBytesComponent implements AesComponent <span class=\"token punctuation\">{<\/span><br \/>\n    public <span class=\"token keyword\">void<\/span> <span class=\"token function\">process<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> data<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ Perform SubBytes transformation<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> data<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            data<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> sbox<span class=\"token punctuation\">[<\/span>data<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0xFF<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public <span class=\"token keyword\">int<\/span> <span class=\"token function\">getLatency<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n    public boolean <span class=\"token function\">isHardwareAccelerated<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> false<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>class ShiftRowsComponent implements AesComponent <span class=\"token punctuation\">{<\/span><br \/>\n    public <span class=\"token keyword\">void<\/span> <span class=\"token function\">process<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> data<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ Perform ShiftRows transformation<\/span><br \/>\n        byte temp <span class=\"token operator\">&#061;<\/span> data<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        data<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> data<span class=\"token punctuation\">[<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span> data<span class=\"token punctuation\">[<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> data<span class=\"token punctuation\">[<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span> data<span class=\"token punctuation\">[<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> data<span class=\"token punctuation\">[<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span> data<span class=\"token punctuation\">[<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> temp<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/ &#8230; more shifts<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public <span class=\"token keyword\">int<\/span> <span class=\"token function\">getLatency<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n    public boolean <span class=\"token function\">isHardwareAccelerated<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> false<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>class MixColumnsComponent implements AesComponent <span class=\"token punctuation\">{<\/span><br \/>\n    public <span class=\"token keyword\">void<\/span> <span class=\"token function\">process<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> data<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ Perform MixColumns transformation<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">mixSingleColumn<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">,<\/span> i <span class=\"token operator\">*<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public <span class=\"token keyword\">int<\/span> <span class=\"token function\">getLatency<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n    public boolean <span class=\"token function\">isHardwareAccelerated<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> false<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Composite component for AES round<\/span><br \/>\nclass AesRound implements AesComponent <span class=\"token punctuation\">{<\/span><br \/>\n    private List<span class=\"token operator\">&lt;<\/span>AesComponent<span class=\"token operator\">&gt;<\/span> components <span class=\"token operator\">&#061;<\/span> new ArrayList<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    public <span class=\"token function\">AesRound<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        components<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>new <span class=\"token function\">SubBytesComponent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        components<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>new <span class=\"token function\">ShiftRowsComponent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        components<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>new <span class=\"token function\">MixColumnsComponent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        components<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>new <span class=\"token function\">AddRoundKeyComponent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public <span class=\"token keyword\">void<\/span> <span class=\"token function\">process<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> data<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>AesComponent component <span class=\"token operator\">:<\/span> components<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            component<span class=\"token punctuation\">.<\/span><span class=\"token function\">process<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public <span class=\"token keyword\">int<\/span> <span class=\"token function\">getLatency<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> components<span class=\"token punctuation\">.<\/span><span class=\"token function\">stream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">mapToInt<\/span><span class=\"token punctuation\">(<\/span>AesComponent<span class=\"token operator\">::<\/span>getLatency<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">sum<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public boolean <span class=\"token function\">isHardwareAccelerated<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> components<span class=\"token punctuation\">.<\/span><span class=\"token function\">stream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">anyMatch<\/span><span class=\"token punctuation\">(<\/span>AesComponent<span class=\"token operator\">::<\/span>isHardwareAccelerated<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Composite component for complete AES<\/span><br \/>\nclass AesCipher implements AesComponent <span class=\"token punctuation\">{<\/span><br \/>\n    private List<span class=\"token operator\">&lt;<\/span>AesRound<span class=\"token operator\">&gt;<\/span> rounds <span class=\"token operator\">&#061;<\/span> new ArrayList<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    private AesComponent initialRound<span class=\"token punctuation\">;<\/span><br \/>\n    private AesComponent finalRound<span class=\"token punctuation\">;<\/span><\/p>\n<p>    public <span class=\"token function\">AesCipher<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> numRounds<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        initialRound <span class=\"token operator\">&#061;<\/span> new <span class=\"token function\">InitialRound<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> numRounds <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            rounds<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>new <span class=\"token function\">AesRound<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        finalRound <span class=\"token operator\">&#061;<\/span> new <span class=\"token function\">FinalRound<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public <span class=\"token keyword\">void<\/span> <span class=\"token function\">process<\/span><span class=\"token punctuation\">(<\/span>byte<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> data<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        initialRound<span class=\"token punctuation\">.<\/span><span class=\"token function\">process<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>AesRound round <span class=\"token operator\">:<\/span> rounds<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            round<span class=\"token punctuation\">.<\/span><span class=\"token function\">process<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        finalRound<span class=\"token punctuation\">.<\/span><span class=\"token function\">process<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public <span class=\"token keyword\">int<\/span> <span class=\"token function\">getLatency<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> initialRound<span class=\"token punctuation\">.<\/span><span class=\"token function\">getLatency<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span><br \/>\n               rounds<span class=\"token punctuation\">.<\/span><span class=\"token function\">stream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">mapToInt<\/span><span class=\"token punctuation\">(<\/span>AesRound<span class=\"token operator\">::<\/span>getLatency<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">sum<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span><br \/>\n               finalRound<span class=\"token punctuation\">.<\/span><span class=\"token function\">getLatency<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    public boolean <span class=\"token function\">isHardwareAccelerated<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> initialRound<span class=\"token punctuation\">.<\/span><span class=\"token function\">isHardwareAccelerated<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span><br \/>\n               rounds<span class=\"token punctuation\">.<\/span><span class=\"token function\">stream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">anyMatch<\/span><span class=\"token punctuation\">(<\/span>AesRound<span class=\"token operator\">::<\/span>isHardwareAccelerated<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span><br \/>\n               finalRound<span class=\"token punctuation\">.<\/span><span class=\"token function\">isHardwareAccelerated<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h2>7. \u72b6\u6001\u673a\u5206\u6790<\/h2>\n<p>\u2003\u2003AES\u52a0\u5bc6\u8fc7\u7a0b\u7684\u72b6\u6001\u673a&#xff1a;<\/p>\n<p>\u521d\u59cb\u72b6\u6001 -&gt; \u521d\u59cb\u8f6e\u5bc6\u94a5\u52a0 -&gt; \u8f6e\u51fd\u6570\u5faa\u73af -&gt; \u6700\u7ec8\u8f6e\u51fd\u6570 -&gt; \u8f93\u51fa\u7ed3\u679c<br \/>\n     \u2191                                                              \u2193<br \/>\n\u9519\u8bef\u5904\u7406 &lt;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-&#043;<br \/>\n     \u2191                                                              \u2193<br \/>\n\u5bc6\u94a5\u9a8c\u8bc1 &lt;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-&#043;<br \/>\n     \u2191                                                              \u2193<br \/>\n\u6570\u636e\u9a8c\u8bc1 &lt;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-&#043;<\/p>\n<h2>8. \u6027\u80fd\u4f18\u5316\u5206\u6790<\/h2>\n<h3>8.1 \u67e5\u8868\u9884\u53d6\u4f18\u5316<\/h3>\n<p>\u2003\u2003\u67e5\u8868\u8bbf\u95ee\u7684\u9884\u53d6\u7b56\u7565&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ Software prefetch for lookup tables<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">prefetch_aes_tables<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ Prefetch S-box tables<\/span><br \/>\n    <span class=\"token function\">__builtin_prefetch<\/span><span class=\"token punctuation\">(<\/span>crypto_ft_tab<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">__builtin_prefetch<\/span><span class=\"token punctuation\">(<\/span>crypto_it_tab<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">__builtin_prefetch<\/span><span class=\"token punctuation\">(<\/span>crypto_aes_sbox<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">__builtin_prefetch<\/span><span class=\"token punctuation\">(<\/span>crypto_aes_inv_sbox<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Cache-aligned table definitions<\/span><br \/>\n<span class=\"token keyword\">__attribute__<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">aligned<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">64<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">const<\/span> u32 crypto_ft_tab<span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">256<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ Forward table data&#8230;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">__attribute__<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">aligned<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">64<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">const<\/span> u8 crypto_aes_sbox<span class=\"token punctuation\">[<\/span><span class=\"token number\">256<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ S-box data&#8230;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>8.2 \u5faa\u73af\u5c55\u5f00\u4f18\u5316<\/h3>\n<p>\u2003\u2003\u5faa\u73af\u5c55\u5f00\u7684\u6027\u80fd\u4f18\u5316&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ Unrolled AES round implementation<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">UNROLLED_AES_ROUND<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">,<\/span> rk<span class=\"token punctuation\">)<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token keyword\">do<\/span> <span class=\"token punctuation\">{<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token comment\">\/* Round 1 *\/<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token function\">AES_SUB_BYTES<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token function\">AES_SHIFT_ROWS<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token function\">AES_MIX_COLUMNS<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token function\">AES_ADD_ROUND_KEY<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">,<\/span> rk<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token comment\">\/* Round 2 *\/<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token function\">AES_SUB_BYTES<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token function\">AES_SHIFT_ROWS<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token function\">AES_MIX_COLUMNS<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token function\">AES_ADD_ROUND_KEY<\/span><span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">,<\/span> rk<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token comment\">\/* &#8230; more unrolled rounds &#8230; *\/<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><\/span><\/span><\/p>\n<p><span class=\"token comment\">\/\/ Conditional unrolling based on key size<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">aes_encrypt_unrolled<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> u8 <span class=\"token operator\">*<\/span>in<span class=\"token punctuation\">,<\/span> u8 <span class=\"token operator\">*<\/span>out<span class=\"token punctuation\">,<\/span><br \/>\n                                       <span class=\"token keyword\">const<\/span> u32 <span class=\"token operator\">*<\/span>rk<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> rounds<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    u32 s0<span class=\"token punctuation\">,<\/span> s1<span class=\"token punctuation\">,<\/span> s2<span class=\"token punctuation\">,<\/span> s3<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ Load and initial AddRoundKey<\/span><br \/>\n    s0 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">GETU32<\/span><span class=\"token punctuation\">(<\/span>in     <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">^<\/span> rk<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    s1 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">GETU32<\/span><span class=\"token punctuation\">(<\/span>in <span class=\"token operator\">&#043;<\/span>  <span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">^<\/span> rk<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    s2 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">GETU32<\/span><span class=\"token punctuation\">(<\/span>in <span class=\"token operator\">&#043;<\/span>  <span class=\"token number\">8<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">^<\/span> rk<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    s3 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">GETU32<\/span><span class=\"token punctuation\">(<\/span>in <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">12<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">^<\/span> rk<span class=\"token punctuation\">[<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ Unroll rounds based on key size<\/span><br \/>\n    <span class=\"token keyword\">switch<\/span> <span class=\"token punctuation\">(<\/span>rounds<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">case<\/span> <span class=\"token number\">10<\/span><span class=\"token operator\">:<\/span> <span class=\"token comment\">\/\/ 128-bit key<\/span><br \/>\n        <span class=\"token function\">UNROLLED_ROUNDS_10<\/span><span class=\"token punctuation\">(<\/span>s0<span class=\"token punctuation\">,<\/span> s1<span class=\"token punctuation\">,<\/span> s2<span class=\"token punctuation\">,<\/span> s3<span class=\"token punctuation\">,<\/span> rk<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">case<\/span> <span class=\"token number\">12<\/span><span class=\"token operator\">:<\/span> <span class=\"token comment\">\/\/ 192-bit key<\/span><br \/>\n        <span class=\"token function\">UNROLLED_ROUNDS_12<\/span><span class=\"token punctuation\">(<\/span>s0<span class=\"token punctuation\">,<\/span> s1<span class=\"token punctuation\">,<\/span> s2<span class=\"token punctuation\">,<\/span> s3<span class=\"token punctuation\">,<\/span> rk<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">case<\/span> <span class=\"token number\">14<\/span><span class=\"token operator\">:<\/span> <span class=\"token comment\">\/\/ 256-bit key<\/span><br \/>\n        <span class=\"token function\">UNROLLED_ROUNDS_14<\/span><span class=\"token punctuation\">(<\/span>s0<span class=\"token punctuation\">,<\/span> s1<span class=\"token punctuation\">,<\/span> s2<span class=\"token punctuation\">,<\/span> s3<span class=\"token punctuation\">,<\/span> rk<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ Final round (no MixColumns)<\/span><br \/>\n    <span class=\"token function\">AES_SUB_BYTES_FINAL<\/span><span class=\"token punctuation\">(<\/span>s0<span class=\"token punctuation\">,<\/span> s1<span class=\"token punctuation\">,<\/span> s2<span class=\"token punctuation\">,<\/span> s3<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">AES_SHIFT_ROWS<\/span><span class=\"token punctuation\">(<\/span>s0<span class=\"token punctuation\">,<\/span> s1<span class=\"token punctuation\">,<\/span> s2<span class=\"token punctuation\">,<\/span> s3<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">AES_ADD_ROUND_KEY_FINAL<\/span><span class=\"token punctuation\">(<\/span>s0<span class=\"token punctuation\">,<\/span> s1<span class=\"token punctuation\">,<\/span> s2<span class=\"token punctuation\">,<\/span> s3<span class=\"token punctuation\">,<\/span> rk<span class=\"token punctuation\">[<\/span>rounds <span class=\"token operator\">*<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ Store result<\/span><br \/>\n    <span class=\"token function\">PUTU32<\/span><span class=\"token punctuation\">(<\/span>out     <span class=\"token punctuation\">,<\/span> s0<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">PUTU32<\/span><span class=\"token punctuation\">(<\/span>out <span class=\"token operator\">&#043;<\/span>  <span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span> s1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">PUTU32<\/span><span class=\"token punctuation\">(<\/span>out <span class=\"token operator\">&#043;<\/span>  <span class=\"token number\">8<\/span><span class=\"token punctuation\">,<\/span> s2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">PUTU32<\/span><span class=\"token punctuation\">(<\/span>out <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">12<\/span><span class=\"token punctuation\">,<\/span> s3<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>8.3 \u5b57\u8282\u5e8f\u5904\u7406\u4f18\u5316<\/h3>\n<p>\u2003\u2003\u5927\u7aef\u5c0f\u7aef\u5904\u7406\u7684\u4f18\u5316&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ Optimized endianness handling<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">GETU32<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>p<span class=\"token punctuation\">)<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\">u32 _result<span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>__BYTE_ORDER__ <span class=\"token operator\">&#061;&#061;<\/span> __ORDER_LITTLE_ENDIAN__<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n            <span class=\"token expression\">_result <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">__builtin_bswap32<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> u32 <span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span>p<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n            <span class=\"token expression\">_result <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">*<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> u32 <span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span>p<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token punctuation\">}<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\">_result<span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><\/span><\/span><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">PUTU32<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>p<span class=\"token punctuation\">,<\/span> v<span class=\"token punctuation\">)<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token keyword\">do<\/span> <span class=\"token punctuation\">{<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>__BYTE_ORDER__ <span class=\"token operator\">&#061;&#061;<\/span> __ORDER_LITTLE_ENDIAN__<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n            <span class=\"token expression\"><span class=\"token operator\">*<\/span><span class=\"token punctuation\">(<\/span>u32 <span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span>p<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">__builtin_bswap32<\/span><span class=\"token punctuation\">(<\/span>v<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n            <span class=\"token expression\"><span class=\"token operator\">*<\/span><span class=\"token punctuation\">(<\/span>u32 <span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span>p<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span> v<span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token punctuation\">}<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><\/span><\/span><\/p>\n<p><span class=\"token comment\">\/\/ Compile-time endianness optimization<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">if<\/span> <span class=\"token expression\">__BYTE_ORDER__ <span class=\"token operator\">&#061;&#061;<\/span> __ORDER_LITTLE_ENDIAN__<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">AES_BYTESWAP<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>x<span class=\"token punctuation\">)<\/span> <span class=\"token function\">__builtin_bswap32<\/span><span class=\"token punctuation\">(<\/span>x<span class=\"token punctuation\">)<\/span><\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">else<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">AES_BYTESWAP<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>x<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">(<\/span>x<span class=\"token punctuation\">)<\/span><\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">endif<\/span><\/span><\/p>\n<h2>9. \u5b89\u5168\u6027\u8003\u8651<\/h2>\n<h3>9.1 \u4fa7\u4fe1\u9053\u653b\u51fb\u9632\u62a4<\/h3>\n<p>\u2003\u2003\u4fa7\u4fe1\u9053\u653b\u51fb\u7684\u9632\u62a4\u63aa\u65bd&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ Constant-time implementations<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">inline<\/span> u8 <span class=\"token function\">constant_time_sbox_lookup<\/span><span class=\"token punctuation\">(<\/span>u8 input<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ Use constant-time table lookup to prevent timing attacks<\/span><br \/>\n    u8 result <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">256<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        u8 mask <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">constant_time_eq_8<\/span><span class=\"token punctuation\">(<\/span>input<span class=\"token punctuation\">,<\/span> i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        result <span class=\"token operator\">|&#061;<\/span> crypto_aes_sbox<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&amp;<\/span> mask<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> result<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Cache timing attack protection<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">flush_aes_tables_from_cache<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ Flush lookup tables from cache after use<\/span><br \/>\n    <span class=\"token comment\">\/\/ to prevent cache timing attacks<\/span><br \/>\n    <span class=\"token function\">clflushopt<\/span><span class=\"token punctuation\">(<\/span>crypto_ft_tab<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">clflushopt<\/span><span class=\"token punctuation\">(<\/span>crypto_it_tab<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">clflushopt<\/span><span class=\"token punctuation\">(<\/span>crypto_aes_sbox<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">clflushopt<\/span><span class=\"token punctuation\">(<\/span>crypto_aes_inv_sbox<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Power analysis protection<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">randomize_aes_execution<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ Add random delays and dummy operations<\/span><br \/>\n    <span class=\"token comment\">\/\/ to obscure power consumption patterns<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token function\">random_delay<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">asm<\/span> <span class=\"token keyword\">volatile<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;nop&#034;<\/span> <span class=\"token operator\">::<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#034;memory&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>9.2 \u5185\u5b58\u5b89\u5168\u9632\u62a4<\/h3>\n<p>\u2003\u2003\u5185\u5b58\u8bbf\u95ee\u7684\u5b89\u5168\u63aa\u65bd&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ Bounds checking for table lookups<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">inline<\/span> u32 <span class=\"token function\">safe_table_lookup<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> u32 <span class=\"token operator\">*<\/span>table<span class=\"token punctuation\">,<\/span> u32 index<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ Ensure index is within bounds<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">unlikely<\/span><span class=\"token punctuation\">(<\/span>index <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">256<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ Handle out-of-bounds access<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> table<span class=\"token punctuation\">[<\/span>index<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Secure memory wiping<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">secure_wipe_aes_context<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">aes_ctx<\/span> <span class=\"token operator\">*<\/span>ctx<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ Securely wipe sensitive key material<\/span><br \/>\n    <span class=\"token function\">memzero_explicit<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">-&gt;<\/span>key_enc<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">-&gt;<\/span>key_enc<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">memzero_explicit<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">-&gt;<\/span>key_dec<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">-&gt;<\/span>key_dec<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    ctx<span class=\"token operator\">-&gt;<\/span>key_length <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Prevent information leakage<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">sanitize_aes_outputs<\/span><span class=\"token punctuation\">(<\/span>u8 <span class=\"token operator\">*<\/span>out<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">size_t<\/span> len<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ Ensure no sensitive data is leaked through output<\/span><br \/>\n    <span class=\"token comment\">\/\/ Clear any unused bytes in output buffer<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>len <span class=\"token operator\">&gt;<\/span> AES_BLOCK_SIZE<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">memzero_explicit<\/span><span class=\"token punctuation\">(<\/span>out <span class=\"token operator\">&#043;<\/span> AES_BLOCK_SIZE<span class=\"token punctuation\">,<\/span> len <span class=\"token operator\">&#8211;<\/span> AES_BLOCK_SIZE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>9.3 \u5bc6\u94a5\u7ba1\u7406\u5b89\u5168<\/h3>\n<p>\u2003\u2003\u5bc6\u94a5\u5904\u7406\u7684\u5b89\u5168\u63aa\u65bd&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ Secure key expansion<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">secure_aes_setkey<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">aes_ctx<\/span> <span class=\"token operator\">*<\/span>ctx<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> u8 <span class=\"token operator\">*<\/span>key<span class=\"token punctuation\">,<\/span><br \/>\n                            <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">int<\/span> key_len<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ Validate key length<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">aes_key_len_valid<\/span><span class=\"token punctuation\">(<\/span>key_len<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span>EINVAL<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ Use constant-time key expansion<\/span><br \/>\n    <span class=\"token function\">aes_expandkey_constant_time<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">-&gt;<\/span>key_enc<span class=\"token punctuation\">,<\/span> key<span class=\"token punctuation\">,<\/span> key_len<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ Generate decryption keys<\/span><br \/>\n    <span class=\"token function\">aes_invert_key_constant_time<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">-&gt;<\/span>key_dec<span class=\"token punctuation\">,<\/span> ctx<span class=\"token operator\">-&gt;<\/span>key_enc<span class=\"token punctuation\">,<\/span> key_len<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ Wipe temporary key material<\/span><br \/>\n    <span class=\"token function\">memzero_explicit<\/span><span class=\"token punctuation\">(<\/span>key_copy<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>key_copy<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Key lifetime management<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">aes_key_cleanup<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">aes_ctx<\/span> <span class=\"token operator\">*<\/span>ctx<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ Secure cleanup when key is no longer needed<\/span><br \/>\n    <span class=\"token function\">secure_wipe_aes_context<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ Prevent use-after-free<\/span><br \/>\n    ctx<span class=\"token operator\">-&gt;<\/span>key_length <span class=\"token operator\">&#061;<\/span> AES_KEY_INVALID<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Fault injection protection<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">aes_fault_detection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">aes_ctx<\/span> <span class=\"token operator\">*<\/span>ctx<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ Detect and handle fault injection attempts<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">aes_key_integrity_check<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ Key has been corrupted, abort operation<\/span><br \/>\n        <span class=\"token function\">panic<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;AES key corruption detected&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h2>10. \u6269\u5c55\u6027\u5206\u6790<\/h2>\n<h3>10.1 \u65b0\u7b97\u6cd5\u652f\u6301<\/h3>\n<p>\u2003\u2003\u6269\u5c55\u652f\u6301\u65b0\u7684\u5206\u7ec4\u5bc6\u7801&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ Generic block cipher interface<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">block_cipher_ops<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>setkey<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">crypto_tfm<\/span> <span class=\"token operator\">*<\/span>tfm<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> u8 <span class=\"token operator\">*<\/span>key<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">int<\/span> keylen<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>encrypt<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">crypto_tfm<\/span> <span class=\"token operator\">*<\/span>tfm<span class=\"token punctuation\">,<\/span> u8 <span class=\"token operator\">*<\/span>dst<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> u8 <span class=\"token operator\">*<\/span>src<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>decrypt<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">crypto_tfm<\/span> <span class=\"token operator\">*<\/span>tfm<span class=\"token punctuation\">,<\/span> u8 <span class=\"token operator\">*<\/span>dst<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> u8 <span class=\"token operator\">*<\/span>src<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> blocksize<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> keysize_min<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> keysize_max<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ AES cipher operations<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">block_cipher_ops<\/span> aes_cipher_ops <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>setkey <span class=\"token operator\">&#061;<\/span> aes_cipher_setkey<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>encrypt <span class=\"token operator\">&#061;<\/span> aes_cipher_encrypt<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>decrypt <span class=\"token operator\">&#061;<\/span> aes_cipher_decrypt<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>blocksize <span class=\"token operator\">&#061;<\/span> AES_BLOCK_SIZE<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>keysize_min <span class=\"token operator\">&#061;<\/span> AES_MIN_KEY_SIZE<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>keysize_max <span class=\"token operator\">&#061;<\/span> AES_MAX_KEY_SIZE<span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Registration with crypto framework<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">crypto_alg<\/span> aes_alg <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>cra_name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;aes&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>cra_driver_name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;aes-arm64&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>cra_priority <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">200<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>cra_flags <span class=\"token operator\">&#061;<\/span> CRYPTO_ALG_TYPE_CIPHER<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>cra_blocksize <span class=\"token operator\">&#061;<\/span> AES_BLOCK_SIZE<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>cra_ctxsize <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">aes_ctx<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>cra_module <span class=\"token operator\">&#061;<\/span> THIS_MODULE<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>cra_u <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span>cipher <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token punctuation\">.<\/span>cia_min_keysize <span class=\"token operator\">&#061;<\/span> AES_MIN_KEY_SIZE<span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token punctuation\">.<\/span>cia_max_keysize <span class=\"token operator\">&#061;<\/span> AES_MAX_KEY_SIZE<span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token punctuation\">.<\/span>cia_setkey <span class=\"token operator\">&#061;<\/span> aes_cipher_setkey<span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token punctuation\">.<\/span>cia_encrypt <span class=\"token operator\">&#061;<\/span> aes_cipher_encrypt<span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token punctuation\">.<\/span>cia_decrypt <span class=\"token operator\">&#061;<\/span> aes_cipher_decrypt<span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>10.2 \u786c\u4ef6\u52a0\u901f\u6269\u5c55<\/h3>\n<p>\u2003\u2003\u786c\u4ef6\u52a0\u901f\u7684\u96c6\u6210&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ Hardware acceleration detection<\/span><br \/>\n<span class=\"token keyword\">static<\/span> bool <span class=\"token function\">aes_hw_acceleration_available<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ Check for various ARM64 crypto extensions<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token function\">cpu_have_feature<\/span><span class=\"token punctuation\">(<\/span>cpu_feature_aes<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span><br \/>\n           <span class=\"token function\">cpu_have_feature<\/span><span class=\"token punctuation\">(<\/span>cpu_feature_pmull<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span><br \/>\n           <span class=\"token function\">cpu_have_feature<\/span><span class=\"token punctuation\">(<\/span>cpu_feature_sha1<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span><br \/>\n           <span class=\"token function\">cpu_have_feature<\/span><span class=\"token punctuation\">(<\/span>cpu_feature_sha256<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Dynamic algorithm selection<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">crypto_alg<\/span> <span class=\"token operator\">*<\/span><span class=\"token function\">aes_select_implementation<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">aes_hw_acceleration_available<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ Use hardware-accelerated version<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&amp;<\/span>aes_ce_alg<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">cpu_have_feature<\/span><span class=\"token punctuation\">(<\/span>cpu_feature_neon<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ Use NEON-accelerated version<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&amp;<\/span>aes_neon_alg<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ Use scalar implementation<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&amp;<\/span>aes_scalar_alg<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Runtime switching<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">aes_init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">crypto_tfm<\/span> <span class=\"token operator\">*<\/span>tfm<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">aes_ctx<\/span> <span class=\"token operator\">*<\/span>ctx <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">crypto_tfm_ctx<\/span><span class=\"token punctuation\">(<\/span>tfm<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ Select optimal implementation at runtime<\/span><br \/>\n    ctx<span class=\"token operator\">-&gt;<\/span>ops <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">aes_select_implementation<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>10.3 \u6d4b\u8bd5\u548c\u9a8c\u8bc1\u6269\u5c55<\/h3>\n<p>\u2003\u2003\u6d4b\u8bd5\u6846\u67b6\u7684\u6269\u5c55&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ Known answer tests for AES<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">aes_test_vector<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>key<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>plaintext<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>ciphertext<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> key_len<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> aes_test_vectors<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span>key <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;000102030405060708090a0b0c0d0e0f&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span>plaintext <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;00112233445566778899aabbccddeeff&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span>ciphertext <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;69c4e0d86a7b0430d8cdb78070b4c55a&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span>key_len <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">16<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token comment\">\/\/ More test vectors&#8230;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Test execution<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">aes_run_tests<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">crypto_aes_ctx<\/span> ctx<span class=\"token punctuation\">;<\/span><br \/>\n    u8 key<span class=\"token punctuation\">[<\/span>AES_MAX_KEY_SIZE<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    u8 plaintext<span class=\"token punctuation\">[<\/span>AES_BLOCK_SIZE<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    u8 ciphertext<span class=\"token punctuation\">[<\/span>AES_BLOCK_SIZE<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    u8 expected<span class=\"token punctuation\">[<\/span>AES_BLOCK_SIZE<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> ret <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token function\">ARRAY_SIZE<\/span><span class=\"token punctuation\">(<\/span>aes_test_vectors<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">aes_test_vector<\/span> <span class=\"token operator\">*<\/span>tv <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>aes_test_vectors<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ Parse test data<\/span><br \/>\n        <span class=\"token function\">hex2bin<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> tv<span class=\"token operator\">-&gt;<\/span>key<span class=\"token punctuation\">,<\/span> tv<span class=\"token operator\">-&gt;<\/span>key_len<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">hex2bin<\/span><span class=\"token punctuation\">(<\/span>plaintext<span class=\"token punctuation\">,<\/span> tv<span class=\"token operator\">-&gt;<\/span>plaintext<span class=\"token punctuation\">,<\/span> AES_BLOCK_SIZE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">hex2bin<\/span><span class=\"token punctuation\">(<\/span>expected<span class=\"token punctuation\">,<\/span> tv<span class=\"token operator\">-&gt;<\/span>ciphertext<span class=\"token punctuation\">,<\/span> AES_BLOCK_SIZE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ Initialize context<\/span><br \/>\n        ret <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">crypto_aes_set_key<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>ctx<span class=\"token punctuation\">,<\/span> key<span class=\"token punctuation\">,<\/span> tv<span class=\"token operator\">-&gt;<\/span>key_len <span class=\"token operator\">*<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>ret<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">goto<\/span> out<span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ Test encryption<\/span><br \/>\n        <span class=\"token function\">crypto_aes_encrypt_one<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>ctx<span class=\"token punctuation\">,<\/span> ciphertext<span class=\"token punctuation\">,<\/span> plaintext<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">memcmp<\/span><span class=\"token punctuation\">(<\/span>ciphertext<span class=\"token punctuation\">,<\/span> expected<span class=\"token punctuation\">,<\/span> AES_BLOCK_SIZE<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">pr_err<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;AES encryption test %d failed\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            ret <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&#8211;<\/span>EINVAL<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">goto<\/span> out<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ Test decryption<\/span><br \/>\n        <span class=\"token function\">crypto_aes_decrypt_one<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>ctx<span class=\"token punctuation\">,<\/span> plaintext<span class=\"token punctuation\">,<\/span> ciphertext<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">memcmp<\/span><span class=\"token punctuation\">(<\/span>plaintext<span class=\"token punctuation\">,<\/span> tv<span class=\"token operator\">-&gt;<\/span>plaintext<span class=\"token punctuation\">,<\/span> AES_BLOCK_SIZE<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">pr_err<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;AES decryption test %d failed\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            ret <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&#8211;<\/span>EINVAL<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">goto<\/span> out<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>out<span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> ret<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h2>11. \u8c03\u8bd5\u548c\u7ef4\u62a4<\/h2>\n<h3>11.1 \u8c03\u8bd5\u4fe1\u606f\u8f93\u51fa<\/h3>\n<p>\u2003\u2003AES\u5b9e\u73b0\u7684\u8c03\u8bd5\u652f\u6301&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ Debug logging macros<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">AES_DEBUG<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>fmt<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token function\">pr_debug<\/span><span class=\"token punctuation\">(<\/span><\/span><span class=\"token string\">&#034;AES: &#034;<\/span> <span class=\"token expression\">fmt<span class=\"token punctuation\">,<\/span> <\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">__VA_ARGS__<span class=\"token punctuation\">)<\/span><\/span><\/span><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">AES_DEBUG_KEY<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">)<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token keyword\">do<\/span> <span class=\"token punctuation\">{<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token function\">AES_DEBUG<\/span><span class=\"token punctuation\">(<\/span><\/span><span class=\"token string\">&#034;key_enc: %*ph\\\\n&#034;<\/span><span class=\"token expression\"><span class=\"token punctuation\">,<\/span> AES_MAX_KEY_SIZE<span class=\"token punctuation\">,<\/span> ctx<span class=\"token operator\">-&gt;<\/span>key_enc<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token function\">AES_DEBUG<\/span><span class=\"token punctuation\">(<\/span><\/span><span class=\"token string\">&#034;key_dec: %*ph\\\\n&#034;<\/span><span class=\"token expression\"><span class=\"token punctuation\">,<\/span> AES_MAX_KEY_SIZE<span class=\"token punctuation\">,<\/span> ctx<span class=\"token operator\">-&gt;<\/span>key_dec<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token function\">AES_DEBUG<\/span><span class=\"token punctuation\">(<\/span><\/span><span class=\"token string\">&#034;rounds: %d\\\\n&#034;<\/span><span class=\"token expression\"><span class=\"token punctuation\">,<\/span> ctx<span class=\"token operator\">-&gt;<\/span>key_length<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><\/span><\/span><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">AES_DEBUG_BLOCK<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>label<span class=\"token punctuation\">,<\/span> data<span class=\"token punctuation\">)<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token function\">AES_DEBUG<\/span><span class=\"token punctuation\">(<\/span><\/span><span class=\"token string\">&#034;%s: %*ph\\\\n&#034;<\/span><span class=\"token expression\"><span class=\"token punctuation\">,<\/span> label<span class=\"token punctuation\">,<\/span> AES_BLOCK_SIZE<span class=\"token punctuation\">,<\/span> data<span class=\"token punctuation\">)<\/span><\/span><\/span><\/p>\n<p><span class=\"token comment\">\/\/ Performance monitoring<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">aes_performance_stats<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">aes_ctx<\/span> <span class=\"token operator\">*<\/span>ctx<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">atomic64_t<\/span> encrypt_calls <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">ATOMIC_INIT<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">atomic64_t<\/span> decrypt_calls <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">ATOMIC_INIT<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">-&gt;<\/span>encrypting<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">atomic64_inc<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>encrypt_calls<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">atomic64_inc<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>decrypt_calls<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">atomic64_read<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>encrypt_calls<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">%<\/span> <span class=\"token number\">1000<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">AES_DEBUG<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Processed %lld encryptions, %lld decryptions\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                 <span class=\"token function\">atomic64_read<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>encrypt_calls<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                 <span class=\"token function\">atomic64_read<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>decrypt_calls<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>11.2 \u9519\u8bef\u68c0\u6d4b\u548c\u6062\u590d<\/h3>\n<p>\u2003\u2003\u9519\u8bef\u5904\u7406\u673a\u5236&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ Input validation<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">aes_validate_input<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> u8 <span class=\"token operator\">*<\/span>in<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">int<\/span> len<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>in<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">AES_DEBUG<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;NULL input buffer\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span>EINVAL<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>len <span class=\"token operator\">!&#061;<\/span> AES_BLOCK_SIZE<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">AES_DEBUG<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Invalid input length: %u (expected %d)\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                 len<span class=\"token punctuation\">,<\/span> AES_BLOCK_SIZE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span>EINVAL<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Context validation<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">aes_validate_context<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">aes_ctx<\/span> <span class=\"token operator\">*<\/span>ctx<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>ctx<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">AES_DEBUG<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;NULL context\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span>EINVAL<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">-&gt;<\/span>key_length <span class=\"token operator\">&lt;<\/span> AES_MIN_ROUNDS <span class=\"token operator\">||<\/span> ctx<span class=\"token operator\">-&gt;<\/span>key_length <span class=\"token operator\">&gt;<\/span> AES_MAX_ROUNDS<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">AES_DEBUG<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Invalid key length: %d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> ctx<span class=\"token operator\">-&gt;<\/span>key_length<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span>EINVAL<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ Validate key material<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">aes_key_corrupted<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">AES_DEBUG<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Key corruption detected\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span>EINVAL<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Recovery mechanisms<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">aes_recover_from_error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">aes_ctx<\/span> <span class=\"token operator\">*<\/span>ctx<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ Attempt to recover corrupted context<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">aes_can_recover<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">aes_reinitialize_context<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">AES_DEBUG<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Context recovered from error\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ Force re-keying<\/span><br \/>\n        ctx<span class=\"token operator\">-&gt;<\/span>key_length <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">AES_DEBUG<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Context reset due to unrecoverable error\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h2>12. \u672a\u6765\u53d1\u5c55\u65b9\u5411<\/h2>\n<p>\u2003\u2003\u968f\u7740ARM64\u67b6\u6784\u548c\u5bc6\u7801\u5b66\u6280\u672f\u7684\u53d1\u5c55&#xff0c;AES\u57fa\u7840\u5b9e\u73b0\u5b50\u6a21\u5757\u5c06&#xff1a;<\/p>\n<p>\u2003\u2003\u2003\u20031. \u652f\u6301\u66f4\u591a\u5bc6\u94a5\u957f\u5ea6&#xff1a;\u6269\u5c55\u652f\u6301192\u4f4d\u548c256\u4f4d\u5bc6\u94a5\u7684\u4f18\u5316 \u2003\u2003\u2003\u20032. \u96c6\u6210\u65b0\u6307\u4ee4\u96c6&#xff1a;\u5229\u7528ARMv9\u7684\u65b0\u5bc6\u7801\u5b66\u6307\u4ee4 \u2003\u2003\u2003\u20033. \u589e\u5f3a\u5b89\u5168\u6027&#xff1a;\u5b9e\u73b0\u66f4\u5f3a\u7684\u4fa7\u4fe1\u9053\u653b\u51fb\u9632\u62a4 \u2003\u2003\u2003\u20034. \u6027\u80fd\u4f18\u5316&#xff1a;\u5229\u7528\u65b0\u7684\u5fae\u67b6\u6784\u7279\u6027\u63d0\u5347\u6027\u80fd \u2003\u2003\u2003\u20035. \u5185\u5b58\u4f18\u5316&#xff1a;\u51cf\u5c11\u5185\u5b58\u5360\u7528\u548c\u7f13\u5b58\u538b\u529b<\/p>\n<h2>13. \u603b\u7ed3<\/h2>\n<p>\u2003\u2003ARM64 crypto AES\u57fa\u7840\u5b9e\u73b0\u5b50\u6a21\u5757\u4f5c\u4e3aARM64\u52a0\u5bc6\u5b50\u7cfb\u7edf\u7684\u57fa\u7840\u7ec4\u4ef6&#xff0c;\u63d0\u4f9b\u4e86\u4e00\u79cd\u9ad8\u6548\u3001\u7eaf\u8f6f\u4ef6\u7684AES\u5b9e\u73b0\u3002\u8be5\u6a21\u5757\u901a\u8fc7\u7cbe\u5fc3\u8bbe\u8ba1\u7684\u67e5\u8868\u6cd5\u548c\u4f4d\u64cd\u4f5c&#xff0c;\u5728\u4fdd\u6301\u4ee3\u7801\u7b80\u6d01\u7684\u540c\u65f6\u5b9e\u73b0\u4e86\u9ad8\u6027\u80fd\u7684AES\u8fd0\u7b97\u3002\u867d\u7136\u6ca1\u6709\u5229\u7528\u4e13\u95e8\u7684\u786c\u4ef6\u52a0\u901f&#xff0c;\u4f46\u901a\u8fc7\u4f18\u5316\u7684\u7b97\u6cd5\u5b9e\u73b0\u548c\u6307\u4ee4\u8c03\u5ea6&#xff0c;\u5728\u901a\u7528\u5904\u7406\u5668\u4e0a\u63d0\u4f9b\u4e86\u63a5\u8fd1\u786c\u4ef6\u52a0\u901f\u7684\u6027\u80fd\u8868\u73b0\u3002\u6e90\u7801\u5206\u6790\u663e\u793a&#xff0c;\u6a21\u5757\u91c7\u7528\u4e86\u67e5\u8868\u4f18\u5316\u3001\u5faa\u73af\u5c55\u5f00\u3001\u6307\u4ee4\u8c03\u5ea6\u7b49\u7ecf\u5178\u7684\u8f6f\u4ef6\u52a0\u5bc6\u4f18\u5316\u6280\u672f&#xff0c;\u4e3aARM64\u5e73\u53f0\u63d0\u4f9b\u4e86\u53ef\u9760\u7684AES\u52a0\u5bc6\u57fa\u7840\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u76ee\u5f551. \u6982\u8ff02. \u8f6f\u4ef6\u67b6\u6784\u56fe3. \u8c03\u7528\u6d41\u7a0b\u56fe4. 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